Question 2.11 in lecture 2

[gems-rk23]

Can I know my mistake for my code, I could not figure it out.

[gems-rk23]

[marijanbeg]

Hi @gems-68239853, thank you for raising this issue. PyBryt reference solution we use for this exercise expects the for loop to be used inside f_cubic function. In other words, f_cubic function takes a metric as an input and returns matrix. I hope this clarifies the requirements of this exercise. Please feel free to reopen this issue or comment if we can provide further information.

[gems-rk23]

I tried to understand your comment and I updates the code as shown below:

it only solved the second comment:

REFERENCE: exercise-2_11 SATISFIED: False MESSAGES:

• ERROR: You are not populating resulting vector correctly.
• SUCCESS: You created a zero-matrix before looping.
• ERROR: Hmmm... The result of your function is wrong.
• SUCCESS: Your matrix A33 is correct.

[marijanbeg]

Hi @gems-68239853, do the assert statements in the cell below pass?

[acse-bg1223]

I am having similar problems with the exercise

The pybryt solution doesn't seem to accept my solution. Not getting any issues with assert tests though

[gems-rk23]

The assert statements shows nothing when I press (shift+enter) to run it, assuming it passed successfuly.

[marijanbeg]

If your assert statements do not raise any errors, then your implementation is probably correct. Here is the explanation why PyBryt is not happy:

Although PyBryt provides much more detailed feedback, it is possible it complains about your code even though assert statement confirms your code is correct. This is because PyBryt testing is based on comparing your solution to reference solutions. Since there is virtually an infinite number of alternative solutions, it is possible that your solution is not in our references. On the other hand, assert statements check the final result of your code and if they do not raise an error, your code is correct and you do not have to address PyBryt's error messages (if any).